Lantern



FIG. 1 is a perspective view of lantern showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof; and,

FIG. 4 is a bottom plan view thereof.

The broken-line showing of environmental structures in FIGS. 1-4 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a lantern, as shown and described. 